Adjustable pressurization type ventilation device

Abstract

The invention provides an adjustable pressurization type ventilation device. The adjustable pressurization type ventilation device comprises an air bin, an air inlet is formed in one end of the air bin, and an air outlet is formed in the other end of the air bin; a pressurizing plate is arranged in the air bin in a sealed and sliding mode and divides the air bin into an air inlet area and a pressurizing area, and air inlet holes are formed in the pressurizing plate; a telescopic air inlet pipe is arranged in the air inlet area, one end of the telescopic air inlet pipe is connected with the air inlet of the air bin, and the other end of the telescopic air inlet pipe is connected with the air inlet holes of the pressurizing plate; and a pressurizing plate driving mechanism is connected with the pressurizing plate. According to the adjustable pressurization type ventilation device, the pressurizing plate is arranged in the air bin, the pressurizing plate and the air bin are combined to form the mechanical pressurizing air bin, when the pressurizing plate driving mechanism is used for driving the pressurizing plate to slide in the air bin, large pressure difference can be formed between an air flow in the air bin and air pressure at an air supply point after the air flow is compressed, fresh air in the air bin can be stably conveyed to the air supply point under the action of the pressure difference, waste gas at the air supply point is extruded out of a tunnel along the space in the tunnel, the ventilation effect is good, and energy consumption is low.

Description

technical field [0001] The invention belongs to the technical field of tunnel ventilation, in particular to an adjustable pressurized ventilation device. Background technique [0002] In recent years, with the advancement of tunnel construction theory and technology, tunnel construction has shown a trend of "long tunnel lines"; in the face of extra-long tunnels of more than ten kilometers, inclined shafts are often used to increase the excavation face, so as to achieve a reasonable acceleration. purpose of construction progress. During the construction process, construction ventilation usually uses fans outside the inclined shaft to transport fresh air from outside the inclined shaft to the working face, so as to reduce the concentration of pollutants such as smoke and dust, and ensure the working vision and physical health of construction workers. [0003] However, the existing inclined shaft ventilation scheme has two obvious disadvantages: [0004] First, when using fan...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the technical problems existing in the prior art, the present invention provides an adjustable pressurized ventilation device to solve the technical problems of poor ventilation effect and high energy consumption in the existing tunnel construction process using inclined shaft auxiliary construction

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